Gesù Church

Gesù – Creativity Center
Montreal, Canada
2020-2025

SIMCO, formerly COSIGMA, was commissioned by the owner to conduct an in-depth assessment of the structural condition of the south transept wall of the Gesù Church and its interactions with the wooden roof frame following significant damage to the structure. In 2019, the construction of a multi-story tower by a developer on the adjacent lot caused severe structural damage to the Gesù Church, which has been classified as a heritage building since 2012. The work disturbed the soil beneath the masonry wall of the church’s south transept, leading to foundation destabilization, significant wall tilting, and numerous structural issues that required complex restoration work.

Reinforcement, Stability, and Durability

SIMCO’s unique expertise in materials and structures ensured the durability and stability of the building through:

• Damage survey
• Structural assessment
• Deformation monitoring
• Consolidation of masonry walls
• Dismantling and reassembly of masonry
• Construction of micropiles
• Reinforcement of the roof frame
• Construction of reinforced concrete tie beams under the foundations
• Installation of interior and exterior scaffolding
• Demolition and reconstruction of concrete slab
• Plans and specifications for masonry repair and roof frame reinforcement
• Technical assistance during the repair work

Technical and Heritage Complexity

The firm integrated modern engineering solutions to ensure the building’s durability while preserving the architectural heritage of the Gesù. The work required constant monitoring of wall deformations and movements. A precise sequencing of steps—securing the building, erecting scaffolding, underpinning, masonry restoration, and interior interventions—was developed in collaboration with stakeholders.